Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea37f607409bf538…

MALICIOUS

PDF

51.4 KB Created: 2020-08-29 23:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c4c7c0af0c71383449758d1f3730129 SHA-1: d4e0e8dcf1f2fcda1ac9aa965d7fc54f7ec7deb5 SHA-256: ea37f607409bf538d2d7c97e1e343d61e045dc2cd4bbd8f0fb10e1182b0ecad3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a refrigerator manual. The document also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs. The primary malicious link is https://ttraff.cc/wix?keyword=igloo+mini+refrigerator+manual, which is likely intended to lead the user to a phishing or malware distribution site.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wix?keyword=igloo+mini+refrigerator+manual
    • https://static.usrfiles.com/ugd/b8c837_d8e6a21790ce485ab6fe7bd13fe62d5a.pdf
    • https://static.usrfiles.com/ugd/913720_864e83018bf14959b0022789df6db5df.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_ca7defbd3c2f42bea9e33ad054d0e160.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/nomomofoxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/31961559263.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9970/files/gifajunapulak.pdf
    • https://cdn.shopify.com/s/files/1/0459/9175/5938/files/gosuzowegarekizuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/90091388633.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/convert_binary_to_text.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/manual_de_arquitectura_bioclimatica.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/ethnography_of_speaking.pdf
    • https://cdn.shopify.com/s/files/1/0432/9105/0137/files/marksheet_formula_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/ethiopian_orthodox_bible_in_english_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a5c1.bin
134237e2c5de05cc8c20e8be980b556a259c636b44ce2be2321387a787517e13		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA5C1 17944 bytes
font_00_sfnt_off000071c3.bin
73906b8ae1c7c4a410e3533340a1dc14a36f7622836d3c5c859b7386e34cf42f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71C3 4848 bytes
font_01_sfnt_off00008225.bin
a672745742d48095649bd09e2a603cfb2fe6a1c45f2366353cc46743933cffa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8225 10352 bytes

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